On a couple of my drawings certain blocks disappear every time I open the drawing and I have to reinsert them. They are still listed in "Blocks Explorer" but are not displayed. Once I re-insert they display fine until I close this drawing. Now every time I open this drawing I have to check all these block insertions to make sure they are being displayed.Also sometimes one of my blocks does not print/plot even though it is shown on drawing and also in print preview. HP Design Jet T520.Both of these problems are something that has just recently started and only in certain drawings that I use model space/layout space.Any ideas what is going on?? Becoming very frustrating.Thanks...Jack

Hi,This doesn't sounds familiar to me, but I would suggest submitting a technical support ticket at http://helpdesk.microsurvey.com so that one of our support reps can test with your drawing and see if there is a bug that needs to be fixed, or better yet if there is a workaround that you can use instead of having to keep reinserting the blocks.